diff --git a/libnetutil/netutil.cc b/libnetutil/netutil.cc
index ade69e3a5..b75c8dfac 100644
--- a/libnetutil/netutil.cc
+++ b/libnetutil/netutil.cc
@@ -1204,6 +1204,8 @@ static int collect_dnet_interfaces(const struct intf_entry *entry, void *arg) {
       dcrn->ifaces[dcrn->numifaces].device_type = devt_other;
     }
 
+    dcrn->ifaces[dcrn->numifaces].ifindex = entry->intf_index;
+
     dcrn->ifaces[dcrn->numifaces].mtu = entry->intf_mtu;
 
     /* Is the interface up and running? */
diff --git a/libnetutil/netutil.h b/libnetutil/netutil.h
index 858091c5d..14fc8c4d0 100644
--- a/libnetutil/netutil.h
+++ b/libnetutil/netutil.h
@@ -259,6 +259,7 @@ struct interface_info {
   struct sockaddr_storage addr;
   u16 netmask_bits; /* CIDR-style.  So 24 means class C (255.255.255.0)*/
   devtype device_type; /* devt_ethernet, devt_loopback, devt_p2p, devt_other */
+  unsigned int ifindex; /* index (as used by if_indextoname and sin6_scope_id) */
   int device_up; /* True if the device is up (enabled) */
   int mtu; /* Interface's MTU size */
   u8 mac[6]; /* Interface MAC address if device_type is devt_ethernet */